You are not required to manually redeploy clusters after updating cluster
properties. The gateway monitors the topology descriptor files in the
$gateway/conf/topologies directory and automatically
redeploys the cluster if any descriptor changes or a new one is added. (The
corresponding deployment is in
$gateway/data/deployments.)

However, you must redeploy the clusters after changing any of the following
gateway properties or gateway-wide settings:

Time settings on the gateway host

Implementing or updating Kerberos

Implementing or updating SSL certificates

Changing a cluster alias

Redeploying all clusters at the same time

When making gateway-wide changes (such as implementing Kerberos or SSL), or if you
change the system clock, you must redeploy all the Cluster Topologies. Do the following:

To verify the timestamp on the currently deployed clusters enter: cd $gatewaydir data/deployments.
The system displays something similar to: